Flexible pipe-joint.



No. 733,065. PATENTED JULY7, 1903. J. G. MARTIN, JR. FLEXIBLE PIPE JOINT.

APPLICATION FILED FEB. 26, 1903. 1 N0 MODEL.

Imam Jsse Cknarzm J No. 793,665. I

UNITED STATES iatenaa July 7, 1963.

PATENT OFFICE.

JESSE o. MARTIN, in, or SAN FRANCISCO, CALIFORNIA;

FLEXIBLE PIPE-JOINT;

SPECIFICATION forming part of Letters Patent No. 733,065, dated :iui 7, 1 90%. Application filed February 26; 1903. Serial No. 145,190. (No model.)

T0 at whom it may concern/.- g

Be it known that" I, J Essa G. MARTIN, Jr. a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented a new and useful Improvement in Flexible Pipe-Joints, of which the following is a specification.

My invention relates to an improvement. in the class of flexible pipe-joints in which a spring is employed for the purpose of pressing the joint-sections together.

The primary object of my improvement is to provide a construction of the flexible j oint whereby the spring within it shall be effectually shielded against the access to it of oil, water, or other liquid, for conducting which the pipes connected by the joint shall be used.

To this end my invention consists in the general construction .of flexible pipejoint whereby my aforesaid object is accomplished and it also consists inthe details of construction and combinations of parts hereinafter set forth, and pointed out in the claims.

In the accompanying drawings, Figure 1. is.

a central longitudinal section of a ball-andsocket pipe-joint constructed in accordance with my improvement,and Fig. 2 is a similar view of another form of pipe-joint containing my improvement.

Referring particularly. to Fig. 1, A is the ball portion, terminating in an externallythreaded nipple ct, andB is the socket portion, terminating at one end in the externallythreaded nipplehand provided at its oppo site end with an external thread 0, upon which.

to screw the annular cap D. The socket B is cast or otherwise formed with an internal annular wall B, extending inward from about the nipple b and forming a spring-chamber E. Within the chamberE is housed a coiled spring F, confined at one end by a washer cl with soft packing a confined against it by a followerG, havinga bearing edge of V shape in cross-section to meet the center of the ring of packing E and tend to spread it in opposite directions therefrom against the adjacent surfaces of the annular Wall B and outer wall of the casing. As shown, the ball is surrounded by an annular gasket H, formed in two sections, confined within the casing, with the cap D bearing against the end of the outermost section.

. soft packing 6.

By the construction thus described the spring F is effectually shielded from access portion B, with the threaded nipple b at one end and external thread 0 at its opposite end, having a cap D screwed upon it, and the internal wall 13, forming the chamber E for'the spring F, confined by awasher d and The joint-section A has formed integral with it the annular follower G, provided with the inner edge of V shape in cross-section and forming an oifset at f, against which a gasket H is confined by the cap D. The outer end of the section A is shown externally threaded with an elbow I screwed upon it.

Obviously the effects of the construction presented in Fig. 2 are the same as those described of the construction illustrated in Figfl.

WVhat Iclaim as new, and desire to secure by Letters Patent, is-

1. In combination, a pipe-joint socket-section, .a companion section confined in the socket-section, one of saidsections having an annular recess the walls of which are integral with said sect-ion, a spring in the recess pressing the sections together, and a packing in the recess receiving pressure from said spring to seal the recess. I i

2. In combination, a pipe-joint socket-section having an annular .recess the walls of which are integral with said section, a companion section confined in the socketsection, a spring in the recess, a follower 'receiving pressure from the spring to press the sections together, and a packing in the recess between the spring and follower to seal the recess.

3. In combination, a pipe-joint socket-section having an annular recess the walls of which are integral with said section, a companion section confined in the socket-section, a spring in the recess, a follower having a V-shaped end entering the recess said follower receiving pressure from the spring to press the sections together, and a packing in the recess between the V-shaped end of the follower and spring to seal the recess.

4. A ball-and-socket pipe-joint comprising, in combination, a socket portion pro 5 vided with an internal annular wall forming a spring-chamber, a spring confined in said chamber, a Washer confined against said spring, packing confined against said washer, a follower having a bearing edge of V shape JESSE G. MARTIN, JR.

In presence of-- L. HEISLAR, WALTER WINBERG. 

